Where to buy: Sonic 2 beta?

I've always wanted a cartridge of Sonic 2 beta (and I guess the alpha too since that came out.) Does anyone know where I could get one? I'd like to have an "authentic" Chinese bootleg with a mockup label and everything, but I'd take a repro with magic marker as well. If someone here bootlegs them, that'd be awesome.

I've searched the internet, even eBay, but no such luck. This is the only game I'd ever want a bootleg for. GBA and DS bootlegs are plentiful on ebay but sadly Genesis games aren't.